AC Power Consumption Calculator
& Unit Estimator
Find out exactly how many units (kWh) your AC consumes daily, monthly, and yearly — and see the real rupee cost of your current setup vs. a 5-star upgrade.
Rated 4.8 out of 5 by 2,340+ users — India's most trusted AC bill calculator
8+ years practical experience in AC / Plant Installation, Maintenance and Repair. HVAC Expert at S.R Enterprise under the authorized dealership of Hitachi. All data is verified against 2026 BEE Tariff Orders and manufacturer specifications.
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AC Type
BEE Star Rating
Power draw at 1.5 Ton: 1.4 kW/hr
Efficiency Score
Decent efficiency. A 5-star inverter upgrade would cut this bill by 30–40%.
Energy Summary
Daily Units
11.20 kWh
₹89.60/day
Monthly Units
336.0 kWh
₹2688/month
Yearly Units
4088 kWh
₹32704/year
5-Year Cost Projection
₹1,63,520
over 5 years
Upgrade Savings Potential
Switching to a 5-Star Inverter Split would cost:
Want to lower that number?
These two products together can cut your AC bill by up to 30%. India's #1 rated AC + the most efficient BLDC fan.
LG 1.5T 5★ Dual Inverter
AI Cooling · ISEER 5.25
Pro tip: Run the LG AC at 26°C with the Atomberg BLDC fan — the fan's wind-chill effect makes 26°C feel like 24°C, cutting your bill by ~30% vs running AC alone at 24°C.
* Affiliate links — we may earn a small commission at no extra cost to you.
How Many Units Does a 1.5 Ton AC
Consume Per Hour?
Power consumption (kWh) at 1.5 Ton across all star ratings and AC types. Based on BEE 2026 certified data at ₹8/unit.
1★ Fixed
2.1 kW
2★ Fixed
1.9 kW
3★ Fixed
1.65 kW
3★ Inv.
1.4 kW
4★ Inv.
1.15 kW
5★ Inv.
0.92 kW
1★ Fixed Speed
₹12,096
1,512 units/month · 8 hrs/day · ₹8/unit
3★ Inverter
₹8,064
1,008 units/month · 8 hrs/day · ₹8/unit
5★ Inverter
₹5,299
662 units/month · 8 hrs/day · ₹8/unit
Inverter vs. Non-Inverter
Power Consumption Facts
The technology difference is massive. Here's the data that AC salespeople don't always tell you.
35%
Power Draw Difference
A 5-star inverter uses 35% less electricity than a 3-star fixed-speed at the same tonnage.
₹38,000+
5-Year Savings
Switching from a 3-star fixed to a 5-star inverter saves over ₹38,000 in electricity over 5 years (8 hrs/day, ₹8/unit).
2–3×
Inverter Compressor Lifespan
Inverter compressors last 2–3x longer because they never fully stop and restart — eliminating the high-stress startup surge.
±20%
Voltage Fluctuation Tolerance
Modern inverter ACs handle ±20% voltage fluctuation — critical for Indian grid conditions in tier-2 and tier-3 cities.
Ready to find the most efficient model?
Our experts have ranked the best 5-star inverter ACs available in India right now.
Electricity Slab Rates Across Major Indian Cities
AC usage typically pushes households into higher slabs. Use the correct rate in the calculator above for accurate results.
* Rates are approximate and subject to change. Check your local DISCOM for the latest tariff schedule. Rates per kWh (unit).
Know your consumption? Now find the most efficient AC.
Commercial spaces have higher heat loads. Use our AC Tonnage Calculator with 'High Occupancy' settings.
Best 5-Star ACs
The lowest-consumption ACs in India — ranked by ISEER and real-world efficiency.
Calculate Your Savings
See exactly how much you save annually by switching to a 5-star inverter model.
Best Inverter ACs
Inverter ACs use 40–60% less power than fixed-speed models. See the top picks.
Ready to buy the most efficient AC?
Our experts have ranked the best 5-star inverter ACs available in India for 2026.
Related Tool
Not sure about your AC size?
Wrong tonnage wastes more electricity than a low star rating. Get the size right first.
Use AC Tonnage Calculator →Best Picks
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Our experts have ranked the most energy-efficient ACs available in India for 2026.
See Best 5-Star ACs in India →Bill Calculator
Calculate your exact monthly bill
Use our flagship calculator to see daily, monthly, and annual cost with inverter savings.
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